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          <th colspan="3" align="center">Chapter 8. 
 Db_multiset  </th>
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            <h2 class="title"><a id="db_multiset"></a>Chapter 8. 
 Db_multiset  </h2>
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      <p>This class is the combination of std::multiset and hash_multiset. </p>
      <p>By setting database handles of DB_BTREE or DB_HASH type respectively, you will be using the equivalent of std::multiset or hash_multiset respectively. This container stores the key in the key element of a key/data pair in the underlying database, but doesn't store anything in the data element. Database and environment handle requirement: The requirement to these handles is the same as that to <a class="link" href="db_multimap.html" title="Chapter 6.  Db_multimap">db_multimap</a>
. </p>
      <h4><a id="idp50728968"></a>
See Also
</h4>
      <p> </p>
      <p><a class="link" href="db_multimap.html" title="Chapter 6.  Db_multimap">db_multimap</a>
 <a class="link" href="db_map.html" title="Chapter 5.  Db_map">db_map</a>
 <a class="link" href="db_container.html" title="Chapter 3.  Db_container">db_container</a>
 <a class="link" href="db_set.html" title="Chapter 7.  Db_set">db_set</a>
 </p>
      <div class="sect2" lang="en" xml:lang="en">
        <div class="titlepage">
          <div>
            <div>
              <h3 class="title"><a id="idp50732528"></a>
Class Template Parameters</h3>
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          </div>
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        <div class="sect3" lang="en" xml:lang="en">
          <div class="titlepage">
            <div>
              <div>
                <h4 class="title"><a id="idp50712448"></a>
kdt</h4>
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          <p>The key data type. </p>
        </div>
        <div class="sect3" lang="en" xml:lang="en">
          <div class="titlepage">
            <div>
              <div>
                <h4 class="title"><a id="idp50739720"></a>
value_type_sub</h4>
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          <p>If kdt is a class/struct type, do not specify anything in this parameter; Otherwise specify ElementHolder&lt;kdt&gt;. </p>
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      <h4><a id="idp50730264"></a> Public Members </h4>
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              <th>Member</th>
              <th>Description</th>
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              <td>
<a class="xref" href="db_multiset.html#stldb_multisetdb_multiset" title="db_multiset">db_multiset</a>
</td>
              <td>
   <p>Create a std::multiset/hash_multiset equivalent associative container. </p>        </td>
            </tr>
            <tr>
              <td>
<a class="xref" href="stldb_multisetdstr_db_multiset.html" title="~db_multiset">~db_multiset</a>
</td>
              <td>
   </td>
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              <td>
<a class="xref" href="stldb_multisetinsert.html" title="insert">insert</a>
</td>
              <td>
   <p>Insert a single key if the key is not in the container. </p>        </td>
            </tr>
            <tr>
              <td>
<a class="xref" href="stldb_multiseterase.html" title="erase">erase</a>
</td>
              <td>
   <p>Erase elements by key. </p>        </td>
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            <tr>
              <td>
<a class="xref" href="stldb_multisetoperator_assign.html" title="operator=">operator=</a>
</td>
              <td>
   <p>Container content assignment operator. </p>        </td>
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            <tr>
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<a class="xref" href="stldb_multisetswap.html" title="swap">swap</a>
</td>
              <td>
   <p>Swap content with another container. </p>        </td>
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              <td>
<a class="xref" href="stldb_multisetoperator_eq.html" title="operator==">operator==</a>
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              <td>
   <p>Container content equality compare operator. </p>        </td>
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            <tr>
              <td>
<a class="xref" href="stldb_multisetoperator_ueq.html" title="operator!=">operator!=</a>
</td>
              <td>
   <p>Inequality comparison operator. </p>        </td>
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      <h4><a id="idp50746736"></a>
Group</h4>
      <p>
<a class="xref" href="dbstl_containers.html" title="Chapter 2.  Dbstl Container Classes">
 Dbstl Container Classes  </a>
</p>
      <p>
</p>
      <div class="sect1" lang="en" xml:lang="en">
        <div class="titlepage">
          <div>
            <div>
              <h2 class="title" style="clear: both"><a id="stldb_multisetdb_multiset"></a>db_multiset</h2>
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        <div class="sect2" lang="en" xml:lang="en">
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              <div>
                <h3 class="title"><a id="stldb_multisetdb_multiset_details"></a>Function Details</h3>
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          <pre class="programlisting">
db_multiset(Db *dbp=NULL,
    DbEnv *envp=NULL)
 </pre>
          <p>Create a std::multiset/hash_multiset equivalent associative container. </p>
          <p>See the handle requirement in class details to pass correct database/environment handles. </p>
          <div class="sect3" lang="en" xml:lang="en">
            <div class="titlepage">
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                <div>
                  <h4 class="title"><a id="idp50729720"></a>Parameters</h4>
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                  <div>
                    <h5 class="title"><a id="idp50757256"></a>dbp</h5>
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              <p>The database handle. </p>
            </div>
            <div class="sect4" lang="en" xml:lang="en">
              <div class="titlepage">
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                  <div>
                    <h5 class="title"><a id="idp50759136"></a>envp</h5>
                  </div>
                </div>
              </div>
              <p>The database environment handle. </p>
            </div>
          </div>
          <div class="sect3" lang="en" xml:lang="en">
            <div class="titlepage">
              <div>
                <div>
                  <h4 class="title"><a id="idp50754864"></a>See Also</h4>
                </div>
              </div>
            </div>
            <p>
    </p>
            <p><a class="link" href="stldb_multimapdb_multimap.html" title="db_multimap">db_multimap(Db*, DbEnv*)</a>
 </p>
            <p>
   </p>
          </div>
          <pre class="programlisting">
db_multiset(Db *dbp, DbEnv *envp, InputIterator first,
    InputIterator last)
 </pre>
          <p>Iteration constructor. </p>
          <p>Iterates between first and last, copying each of the elements in the range into this container. Create a std::multi/hash_multiset equivalent associative container. Insert a range of elements into the database. The range is [first, last), which contains elements that can be converted to type ddt automatically. This function supports auto-commit. See the handle requirement in class details to pass correct database/environment handles. </p>
          <div class="sect3" lang="en" xml:lang="en">
            <div class="titlepage">
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                <div>
                  <h4 class="title"><a id="idp50736096"></a>Parameters</h4>
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            <div class="sect4" lang="en" xml:lang="en">
              <div class="titlepage">
                <div>
                  <div>
                    <h5 class="title"><a id="idp50736288"></a>dbp</h5>
                  </div>
                </div>
              </div>
              <p>The database handle. </p>
            </div>
            <div class="sect4" lang="en" xml:lang="en">
              <div class="titlepage">
                <div>
                  <div>
                    <h5 class="title"><a id="idp50762392"></a>envp</h5>
                  </div>
                </div>
              </div>
              <p>The database environment handle. </p>
            </div>
            <div class="sect4" lang="en" xml:lang="en">
              <div class="titlepage">
                <div>
                  <div>
                    <h5 class="title"><a id="idp50762712"></a>last</h5>
                  </div>
                </div>
              </div>
              <p>The open boundary of the range. </p>
            </div>
            <div class="sect4" lang="en" xml:lang="en">
              <div class="titlepage">
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                  <div>
                    <h5 class="title"><a id="idp50763032"></a>first</h5>
                  </div>
                </div>
              </div>
              <p>The closed boundary of the range. </p>
            </div>
          </div>
          <div class="sect3" lang="en" xml:lang="en">
            <div class="titlepage">
              <div>
                <div>
                  <h4 class="title"><a id="idp50757088"></a>See Also</h4>
                </div>
              </div>
            </div>
            <p>
    </p>
            <p><a class="link" href="stldb_multimapdb_multimap.html" title="db_multimap">db_multimap(Db*, DbEnv*, InputIterator, InputIterator)</a>
 </p>
            <p>
   </p>
          </div>
          <pre class="programlisting">
db_multiset(const self &amp;x)
 </pre>
          <p>Copy constructor. </p>
          <p>Create a database and insert all key/data pairs in x into this container. x's data members are not copied. This function supports auto-commit. </p>
          <div class="sect3" lang="en" xml:lang="en">
            <div class="titlepage">
              <div>
                <div>
                  <h4 class="title"><a id="idp50757472"></a>Parameters</h4>
                </div>
              </div>
            </div>
            <div class="sect4" lang="en" xml:lang="en">
              <div class="titlepage">
                <div>
                  <div>
                    <h5 class="title"><a id="idp50757664"></a>x</h5>
                  </div>
                </div>
              </div>
              <p>The source container to initialize this container. </p>
            </div>
          </div>
          <div class="sect3" lang="en" xml:lang="en">
            <div class="titlepage">
              <div>
                <div>
                  <h4 class="title"><a id="idp50758504"></a>See Also</h4>
                </div>
              </div>
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            <p>
    </p>
            <p>db_multimap(const db_multimap&amp;) <a class="link" href="stldb_containerdb_container.html" title="db_container">db_container(const db_container&amp;)</a>
 </p>
            <p>
   </p>
          </div>
        </div>
        <div class="sect2" lang="en" xml:lang="en">
          <div class="titlepage">
            <div>
              <div>
                <h3 class="title"><a id="idp50739216"></a>Class</h3>
              </div>
            </div>
          </div>
          <p>
  <a class="link" href="db_multiset.html" title="Chapter 8.  Db_multiset">db_multiset</a>
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